Gain calculations in capillary discharge plasmas. Proposal for high temperature two-step discharge without plasma compression

摘要

Within precise atomic-kinetic model gain coefficients are calculated for the Ne-like argon plasma of a capillary discharge. New effective lasing channels are found. We have performed the diagnostics of plasma for the experimental observation of ASE effect in capillary discharges using our theoretical gain dependence on plasma parameters. We discuss the possibility to obtain the optimum high temperature plasma by two-step discharge with an ultra-short second discharge: rise time current pulse with di/dt as high as 10~(12) A/s.